ok ... here :
open OldCODB and open config.ini (put ur hamachi ip in there)
put OldCODB on Local C:/
open ur client folder .. look for server.dat and there search 101 .. put ur server name and hamachi ip there .. save it.
i recomand you to keep Hamachi open when u login the server..
Sorry my english .. I left the school with 3 years before to finish it
I hope this will solve ur problem.